DNS
THE CERTIFICATE BEHIND THE CONNECTION

TLS certificate checker.

Inspect SSL/TLS certificates for any public domain or subdomain.

Checks HTTPS on port 443, including subject alternative names, validity dates and the presented chain.

SSL certificate

TLSv1.3

mail.datatrans.hu · 81.93.193.11:443

Verified

Certificate chain, hostname and dates verified using this server’s CA store.

Subject
CN=mail.datatrans.hu
Issuer
C=US O=Let's Encrypt CN=YR1
Valid from
2026-10-20T09:34:47+00:00
Expires
2027-01-18T09:34:46+00:00
Days remaining
83
Serial (hex)
06288E13023E24ADFC7E793982D482ABAE87
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:imap.datatrans.hu, DNS:mail.datatrans.hu, DNS:smtp.datatrans.hu

SHA-256 fingerprint

FE:37:51:5E:FB:CD:31:BB:10:E2:D9:1E:F1:98:34:D7:8C:5E:D7:AD:B5:31:38:46:90:A7:AB:D2:82:D0:7E:AF
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
24:17:7D:F9:9B:0D:D5:35:4E:F9:58:86:EF:E6:7F:6D:83:9C:6C:DE
authorityKeyIdentifier
1F:2F:35:BE:46:14:82:CD:40:B1:AE:79:2C:55:78:FA:F7:D4:68:FB
authorityInfoAccess
CA Issuers - URI:http://yr1.i.lencr.org/
subjectAltName
DNS:imap.datatrans.hu, DNS:mail.datatrans.hu, DNS:smtp.datatrans.hu
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr1.c.lencr.org/8.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : D6:D5:8D:A9:D0:17:53:F3:6A:4A:A0:C7:57:49:02:AF: EB:C7:DC:2C:D3:8C:D9:F7:64:C8:0C:89:19:1E:9F:02 Timestamp : Oct 20 10:33:17.426 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:45:02:21:00:BC:05:E2:80:19:67:50:29:9C:21:BB: CF:10:E5:1E:2B:06:DD:F7:45:41:87:F9:3B:5C:88:74: F0:FC:A5:85:EC:02:20:7E:53:43:CD:96:04:DD:DE:23: 13:73:D4:D1:05:10:8B:18:90:2A:B2:B2:20:33:38:BC: CC:2A:67:C8:DF:45:54 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 59:6E:6C:33:86:94:B2:59:72:A2:56:C8:A0:E8:DD:90: 4A:76:E8:08:3D:DA:87:3B:01:08:38:28:14:3C:EE:59 Timestamp : Oct 20 10:33:17.649 2026 GMT Extensions: 00:00:05:00:11:19:B5:D9 Signature : ecdsa-with-SHA256 30:45:02:21:00:F2:76:14:56:9F:0B:AC:1E:92:29:14: B7:C6:09:5B:F0:D9:08:5B:D5:F3:5E:F3:AB:BF:78:3D: F5:A7:0A:30:AF:02:20:38:8A:99:ED:63:9A:B2:27:75: C1:C5:EC:4D:F9:2C:D4:78:0D:36:38:C2:7F:DA:47:E9: 73:86:FE:EB:36:C9:1F
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-26T13:13:33+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=Let's Encrypt CN=YR1
Issuer
C=US O=ISRG CN=Root YR
Valid from
2025-09-03T00:00:00+00:00
Expires
2028-09-02T23:59:59+00:00
Days remaining
677
Serial (hex)
A20253F15F2691C05DC1CE13B9BCCA4E
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

13:94:96:34:D9:9C:D6:FD:6A:A8:0B:C0:34:FE:FA:CC:EB:19:69:FE:EF:98:65:86:71:3E:CD:BB:05:75:8D:3F
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
1F:2F:35:BE:46:14:82:CD:40:B1:AE:79:2C:55:78:FA:F7:D4:68:FB
authorityKeyIdentifier
DE:E7:5B:60:D0:22:6D:40:28:7D:3F:0D:01:FE:A4:B5:52:B4:51:94
authorityInfoAccess
CA Issuers - URI:http://yr.i.lencr.org/
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr.c.lencr.org/ 
-----BEGIN CERTIFICATE-----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=
-----END CERTIFICATE-----

Chain certificate 2

Subject
C=US O=ISRG CN=Root YR
Issuer
C=US O=Internet Security Research Group CN=ISRG Root X1
Valid from
2026-05-13T00:00:00+00:00
Expires
2032-09-02T23:59:59+00:00
Days remaining
2138
Serial (hex)
F24B6D17F9D9AD7CB1C9FEA78782699F
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

07:26:39:D0:B1:40:D5:BF:FA:E1:6A:D9:C3:F6:CC:60:86:04:06:21:F5:1E:E6:1A:6D:46:A8:91:5C:07:CF:76
Certificate extensions & PEM
keyUsage
Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE
subjectKeyIdentifier
DE:E7:5B:60:D0:22:6D:40:28:7D:3F:0D:01:FE:A4:B5:52:B4:51:94
authorityKeyIdentifier
79:B4:59:E6:7B:B6:E5:E4:01:73:80:08:88:C8:1A:58:F6:E9:9B:6E
authorityInfoAccess
CA Issuers - URI:http://x1.i.lencr.org/
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://x1.c.lencr.org/ 
-----BEGIN CERTIFICATE-----
MIIF9DCCA9ygAwIBAgIRAPJLbRf52a18scn+p4eCaZ8wDQYJKoZIhvcNAQELBQAw
TzELMAkGA1UEBhMCVVMxKTAnBgNVBAoTIEludGVybmV0IFNlY3VyaXR5IFJlc2Vh
cmNoIEdyb3VwMRUwEwYDVQQDEwxJU1JHIFJvb3QgWDEwHhcNMjYwNTEzMDAwMDAw
WhcNMzIwOTAyMjM1OTU5WjAuMQswCQYDVQQGEwJVUzENMAsGA1UEChMESVNSRzEQ
MA4GA1UEAxMHUm9vdCBZUjCCAiIwDQYJKoZIhvcNAQEBBQADggIPADCCAgoCggIB
ANvGJnN78CTJdWL3+eGfsLN5TrNBJs+VH9hRXqRbwxu9sGNiB0BD1fcOxbSUQCJI
M1xE13Db+5Cw1w0s0EBYsvuIP/6joF0w8cuImbgR1OGgYbSQ4OpzI+DG8SGuTlcE
873OCS+kh3srlo6vl43M5OJg4Aeo1sfHp6kTJDoIiFBNJAY+OKfX/FUvYKuhjT+n
o49lmqmupSBI5PkBQiqrEGtWU5uxU/cQWHGu8jSjFBznZqvbNPLMXMLFxCb3WTfr
JBXXjqvWG+v4bjzxjjeAtOlU7qarRDvNOyAuQYLln904M+faKx8hnLCpJ15ZqaEg
cNlY+9MMWcC5yvL2A2j3l9+2buggZX+dOE91zYmIdawTvSZuVvlbRrAlLxIB6pwM
BjneXCjYQ8+3BCCjssbSNpZU3hTcBDdhfAlEDlYr6pEatnMdmDT5BqnKC92bd0Eh
M1fbLHioLccLCuievT8ZkPhZrq7Mii7gNXAcUEAR8+lzYal+9zTg7C5DALyVOeG/
CqfRAMn1KSHCR0NSA6P8tn/mGRlnCct5rtVCLnVySVpU6H1qGg3DgTOuskf8eahT
MiYbI5ezPJmO5ertalskQ1utp74+eDy92PI4ftHKTbq9IWhH4YZKh3WnJEIt+oQv
lYZbY8tpEroKrFB6PFGzrJIDRyts4HqvuH52RFj2zv/BAgMBAAGjgeswgegwDgYD
VR0PAQH/BAQDAgEGMBMGA1UdJQQMMAoGCCsGAQUFBwMBMA8GA1UdEwEB/wQFMAMB
Af8wHQYDVR0OBBYEFN7nW2DQIm1AKH0/DQH+pLVStFGUMB8GA1UdIwQYMBaAFHm0
WeZ7tuXkAXOACIjIGlj26ZtuMDIGCCsGAQUFBwEBBCYwJDAiBggrBgEFBQcwAoYW
aHR0cDovL3gxLmkubGVuY3Iub3JnLzATBgNVHSAEDDAKMAgGBmeBDAECATAnBgNV
HR8EIDAeMBygGqAYhhZodHRwOi8veDEuYy5sZW5jci5vcmcvMA0GCSqGSIb3DQEB
CwUAA4ICAQA8spSI95KKfn2W6GMmDpHBJSPaLbsS3W93cijJCRCYAc1fsJgL1FIL
7C0C9ecPOdcwB2fi0Dk2p94j9iTJCxmt5CFSKLRWwnXT2MMSXexVxqoVB79BdWPx
VXETkVme/qYSAuKVHh5Ps+5BixgmwS1JkjSAc+MfrUbNssVEEnH0aEiAh+rotXAV
JSP/Ye7LJPEwD9DWG72vVWbhAcuOf5OLjz57Ctk7MgQHynZ7+PlHJtajroCaIbtC
r6tcZZaAwUQm+jQyeWdV+2hv9deOYFmKeQyjjcSrN5Nadrw+L9DZJLbA1HqeNvLh
BgqpP0fvJq2N6EtD574N6eMI7uMsJTnji2UDz9el5XLSv9fqJMuDQtYVb2oTNoKp
oUqhxPVC0aq4eG5MESaIdn8b5ZGSSeAJLMHXljEdlNza+ncfkviXk1POLnnFdvx8
/gk6M374WbLWFXw8N141B/Rl/tINGfl1TxOIiqtiMYkL02RSGb1kq34BL9NPP27z
RGMuHGnzS3hFIrRTfKxrzUZ9RzQWzEG3K6fJ3r2nqSltkeytis9DIBoFY9VmVyjL
M71DMi+y1+TRSJVClEMwvA4yL++7q9XZx5r5wBRWB4kQTKH5qyoZnDw7iiuh1lID
yDFx8r7i9vIJU5HS3moZLkYWAOilMaV9N56A9Bgb6dNcHkvg3NoaYA==
-----END CERTIFICATE-----

One endpoint on port 443. Server-presented chain; no revocation, OCSP, CT or full TLS security scan.

View certificate JSON

Registration / WHOIS →DNS records →